<template>
    <div>
        <div class='search'>
            <input v-model='keyword' class="search-input" type="text" placeholder="输入城市名或拼音"/>
        </div>
        <div 
            class='search-content' 
            ref='search'
            v-show='keyword'
        >
            <ul>
                <li class='search-item border-bottom' 
                v-for="item of list" 
                :key='item.id'
                @click='handleCityClick(item.name)'
                >
                {{item.name}}
                </li>
                <li class='search-item border-bottom' v-show='hasNoData'>请输入正确的地名</li>
            </ul>
        </div>
    </div>
</template>

<script>
import Bscroll from "better-scroll"
import { mapMutations } from 'vuex'
export default {
    name: 'CitySearch',
    props: {
        cities: Object
    },
    data () {
        return {
            keyword: '',
            list: [],
            timer: null
        }
    },
    methods: {
        handleCityClick (city) {
      this.changeCity(city)
      this.$router.push('/')
    },
        ...mapMutations(['changeCity'])
    },
    computed: {
        hasNoData () {
            return !this.list.length
        }
    },
    watch: {
        keyword () {
            if (this.timer){
                clearTimeout(this.timer)
            }
            if (!this.keyword){
                this.list = []
                return
            }
            this.timer = setTimeout(() => {
                const result = []
                for (let i in this.cities) {
                    this.cities[i].forEach((value) => {
                        if (value.spell.indexOf(this.keyword) > -1 ||
                         value.name.indexOf(this.keyword) > -1) {
                             result.push(value)
                         }
                    })
                }
                this.list = result
            }, 100)
        }
    },
    mounted () {
        this.scroll = new Bscroll(this.$refs.search)
    }
}
</script>

<style lang='stylus' scoped>
    @import '~styles/varibles.styl';
    .search
        height : .72rem
        padding : 0 .1rem
        background : $bgColor
        .search-input
            box-sizing : border-box
            width : 100%
            height :.62rem
            padding :0 .1rem
            line-height : .62rem
            text-align : center
            border-radius: .06rem
            color:#666
    .search-content
        z-index: 1
        overflow: hidden
        position:absolute
        top: 1.58rem
        left: 0
        right: 0
        bottom: 0
        background : #eee
        .search-item
            line-height: .62rem
            padding-left: .2rem
            background : #fff
            color: #666
</style>
